Bath-tub, in particular a whirlpool type bath

Abstract: Bath-tub, in particular a whirlpool-type bath, comprising control and actuation elements, as well as water delivery elements, such as a means for actuating the plug provided to stop the water drain hole, a control means for mixing hot water with cold water so as to achieve a single flow of water at a desired temperature, an actuation means to divert said water flow towards the extractable nozzle of the hand-shower, a control means for starting and stopping the operation of the water circulating pump and the air blowing pump, a plug means for filling the disinfectant liquid into a respective reservoir and a switch means to operate a valve provided to let said disinfectant liquid into the water circulation circuit, as well as an extractable hand-shower and at least an outlet to deliver a cascade-type flow of water into the tub, wherein on the two upper edges of the opposing longitudinal sides of said tub there are installed in a central, mutually opposing position two respective large handles provided with an appropriately profiled portion, said control, actuation and water delivery elements being at least in part housed in said two large handles.

Description: This invention relates to an improvement in a bath-tub in which the control and command means are more conveniently gathered in appropriate elements disposed along the upper edges of the bath-tub itself. Bath-tubs, in particular whirlpool-type baths, are known to be provided with a number of functional control and actuation means, as well as water delivery means, such as for instance a means for actuating the plug stopping the water drain hole, a control means for mixing hot water with cold water so as to achieve a single flow of water at a desired temperature, an actuation means to divert said water flow towards the extractable nozzle of the hand-shower, a control means for starting and stopping the operation of the water circulating pump and the air blowing pump, a plug means for filling the disinfectant liquid into a respective reservoir and a switch means to operate an electromechanical valve provided to let said disinfectant liquid into the water circulation circuit, as well as a hand-shower and at least an outlet to deliver a cascade-type flow of water into the tub. All such control and actuation means are typically arranged either on the side wall adjacent to the tub or along the upper edges of the sides of the tub, in particular along the lengthwise extending sides of the latter. Now, this gives practically rise to a double order of drawbacks: the installation of said functional control and/or actuation means directly on the surface of the tub or the wall adjacent to the tub makes it necessary for the manufacturer to provide a large number of drillings in order to let said elements through the material of which the tub is made, and this calls for a number of very sensitive, high-accuracy and, therefore, also expensive manufacturing operations to be additionally performed, even in view of restoring water-tightness around the spots where these elements protrude after their installation. This is particularly true when said elements are arranged on the wall adjacent to the bath-tub, this making it in fact necessary to inevitably perform also some masonry work and far more expensive installation operations. Furthermore, normal or ordinary maintenance of said elements, as well as their possible repair or replacement, turn out to be quite complicated operations to perform and would typically require the work of more specialized professionals, such as masons, tilers and plumbers. The second drawback derives from the fact that such control and actuation means, for them to be actuated conveniently, shall be arranged in a zone which is normally intended as a location in which support and/or aidance handles for the user are to be provided. It therefore happens that, in such a zone, there comes to be a concentration of elements which can either make the location of said handles less convenient or make it more complicated to correctly operate or actuate said means. From US 4, 008, 498 it is known a bath-tub provided with a water fillable pad for positioning on the tub bottom, the top wall of said water fillable pad having a plurality of elongated air tubes serially apertured, and a compressor delivering compressed air through a tube to said air tube so the bubbles rise and agitate the water around the bather. The water fillable pad has a hingedly connected air inflatable back rest. However, the use of said pad appears to be something complicated and uncomfortable because the pad has to be prepared and opened before any use, and put away in a proper compartment after use. Furthermore if the bather only wishes to attain the comfort of the back rest without the "whirlpool effect", i.e. the discharging air bubbles through the tube water around the bather, said pad cannot be used as it supplies integrated and not detachable devices for air bubbles and air filled back rest. It therefore would be desirable, and it is in fact a purpose of the present invention, to provide a bath-tub, in particular a whirlpool-type bath, which is arranged to do away with the afore cited drawbacks, without involving any manufacturing or construction complication or making it necessary to make use of some unusual technology, in a very cost-effective manner. According to the present invention, this and other aims are reached in an improved type of bath-tub as claimed in the appended claims. The invention will be more clearly and readily understood from the description which is given hereinafter by way of non-limiting example with reference to the accompanying drawings, in which: Figure 1 is a top view of the layout of a bath-tub according to the invention; Figure 2 is a view of a first detail of said bathtub; Figure 3 is a view of a second detail of the same bath-tub. With reference to the above listed Figures, it may be noticed that Figure 1 shows a bath-tub 1 on the bottom of which a plurality of holes 2 are provided for the whirlpool function; said bath-tub is furthermore provided with two large handles 3, 4 situated on the corresponding two upper edges 5 and 6, respectively, of the mutually opposing long sides of the bath-tub. With particular reference to Figures 2 and 3, it can be noticed that a first such large handle, which is generally indicated with the reference numeral 3, is provided with a respective appropriately profiled portion 7 where some of the above cited control and actuation means are arranged, such as for instance the actuation element for the ratchet-type plug 9 used to stop the water drain hole of the wash-tub, as well as the push-buttons 10 and 11 for switching on and off the water circulating pump and the air blowing pump, or 'blower', respectively. Said appropriately profiled portion may also comprise the cap 12 through which the disinfectant liquid is filled into the related reservoir (not shown), from which said liquid is then let into the water circulation circuit according to an appropriately timed sequence upon the actuation of a further control element 13 that is also situated on the same appropriately profiled portion 7 of said first large handle 3. Since this phase in which said disinfectant liquid is let into the water circulation circuit shall preferably be carried out when the bath-tub is empty, ie. after its use, in order to prevent the user from accidentaly activating the disinfection circuit when he or she is still immersed in the bath, or to prevent such a circuit from being erroneously activated, for instance by unattended children, said control element 13 is advantageously separated into two distinct elements 13 and 13A, wherein said element 13 consists merely of an inlet hole for introducing a special separate key 13A, such as for instance a magnetically operating key, which is normally kept separately in an appropriate place. Upon using the bath-tub, the user introduces said key 13A in the corresponding hole 13 and this actuation causes the automatic disinfection sequence to take place in the water circulation circuit of the tub, said sequence, according to known techniques, being adapted to comprise a water flow for a certain predetermined period of time to flush both the circuit and the associated water circulation elements, as well as the opening for a predetermined period of time of a valve (not shown) for letting said disinfectant liquid out of said reservoir and into said water circulation circuit at an appropriate point thereof. Convenient and easy activation of the disinfecting function is therefore ensured in this way, along with the provision of a safety feature associated with the impossibility of starting said function accidentaly when the user is still in the bath-tub or having it started by other, unauthorized people which might do it erroneously. Referring now to Figure 3 illustrating the second large handle 4; it can be noticed that the latter is provided with a respective appropriately profiled portion 14 on which further functional elements are arranged, such as for instance the control means 15 for mixing hot water and cold water, the push-button control means 16 for diverting the flow of mixed water from the extractable hand-shower 17 to the cascade-type free water outlet 18 and vice-versa. In particular, said cascade-type free water outlet 18 is provided in the hollow space between two lips 19 and 20, which are flanking each other vertically, but not fitting together, provided in said appropriately profiled portion 14. It is obvious that the various control and actuation means are acting on their respective functional elements which operate in a normal way and, therefore, since they do not fall into the scope of the present invention, are not described any further. The present invention consists in providing the back wall of the tub with an inflatable cushion 21, while arranging the corresponding control means for inflating and deflating said cushion on appropriate elements 22 and 23, respectively, which are in a preferred way made in the form of push-buttons and are located on either of said large handles, as shown in Figure 2. Said inflatable cushion may be actuated with either compressed air or a water flow at an adequate pressure; such fluids under pressure may be derived from either the water circulation circuit or the "blower" of the tub, depending on the particular design option selected and according to techniques that are well-known to anyone skilled in the art and that will therefore not be described here any further. Furthermore, the pressure required to inflate the cushion may be directly derived from the water delivery pressure in the mains. A further improvement of the present invention consists in sealing and making all of the above mentioned control and actuation means adequately water-tight, so as to prevent water possibly seeping therethrough from being able to damage functional elements located thereunder. To this purpose, said control and actuation means are made in the form of knobs or push-buttons covered by an elastic membrane which is sealed in a water-tight manner with any known technique along the entire opening in the handle through which each control means shall necessarily be capable of being actuated. Therefore, following advantages are reached with the present invention: a) rapidity in the connection of the various control and actuation means and the associated water delivery elements and the other functional elements of the tub; b) easy assembly of the tub handles with the associated control and actuation means which therefore can be pre-assembled separately and not necessarily during the installation of the tub; c) improved water-tight sealing of the various control and actuation means; d) provision of an easily and conveniently inflatable cushion; e) rational arrangement of said control, actuation and water delivery means, said arrangement becoming compatible with a better, more convenient positioning of the support handles; f) overall manufacturing and installation cost-effectiveness, under utilization of known, simple and reliable techniques. It will be appreciated that each bath-tub may be made also to forms and shapes differing from the ones that have been illustrated here, without departing from the scope of the present invention.

Claims: A whirlpool bath-tub (1), comprising: two opposing longitudinal sides, means (15) for mixing hot water with cold water so as to achieve a single flow of water of a desired temperature, an air blowing pump and relevant circuits, means (11) for respectively starting and stopping the operation of said air blowing pump; two handles (3,4) placed on two upper edges (5,6) of respective said opposing longitudinal sides of said tub, bearing: said means (11) for starting and stopping the operation of said air blowing pump, characterised in that the bath-tub further comprises a hand-shower (17) provided with extractable nozzle, means (16) to direct said water flow towards said extractable nozzle, a water circulating pump and relevant circuits; means (10) for starting and stopping the operation of said water circulating pump; the handles further bearing said means (15), for mixing hot and cold water, said means (16) to direct said water flow towards said nozzle, and said means (10) for starting and stopping the operation of said water circulating pump; a lean-on cushion (21) provided on one short side of said tub, and being able to be inflated and deflated through the admission and discharge of compressed air or water into and from it, and provided with respective control means (22,23) whereby said respective control means (22,23) relevant to said lean-on cushion (21) operation, are arranged on one (3) of said two handles. Bath tub according to claim 1 , characterized in that the compressed air or water used to inflate said lean-on cushion are taken from said air blowing circuits or alternatively from said water circulating circuits. Bath tub according to any of the preceding claims characterized in that: a reservoir of disinfectant liquid is provided and associated with a valve able to selectively let said disinfectant liquid into said water circulating circuits, said valve comprising a first element defined as a hole (13) placed in one (3) of said handles and a corresponding key means (13A) removable and operable through its inter-action with said hole (13) Bath-tub according to claim 3, characterized in that said key means (13A) are of magnetically operating type.

Inventors: COLUSSI LUCIO, D ANDREA MARIO, COLUSSI, LUCIO, D'ANDREA, MARIO
Applicants: DOMINO SPA, DOMINO S.P.A.
Application year: 1994
Main classification: A61H33
IPC codes: A61H33